Structural characteristics of strongly coupled ions in a dense quantum plasma

Abstract

The structural properties of strongly coupled ions in dense plasmas with moderately to strongly degenerate electrons are investigated in the framework of the one-component plasma model of ions interacting through a screened pair interaction potential. Special focus is put on the description of the electronic screening in the Singwi-Tosi-Land-Sjoelander (STLS) approximation. Different crosschecks and analyses using ion potentials obtained from ground-state quantum Monte Carlo data, the random phase approximation (RPA), and existing analytical models are presented for the computation of the structural properties, such as the pair distribution and the static structure factor, of strongly coupled ions. The results are highly sensitive to the features of the screened pair interaction potential. This effect is particularly visible in the static structure factor. The applicability range of the screened potential computed from STLS is identified in terms of density and temperature of the electrons. It is demonstrated that at r_s > 1, where rs is the ratio of the mean inter-electronic distance to the Bohr radius, electronic correlations beyond RPA have a non-negligible effect on the structural properties. Additionally, the applicability of the hypernetted chain approximation for the calculation of the structural properties using the screened pair interaction potential is analyzed employing the effective coupling parameter approach.

References in corpus (26)

• The Uniform Electron Gas at Warm Dense Matter Conditions
• Ab initio Exchange-Correlation Free Energy of the Uniform Electron Gas at Warm Dense Matter Conditions
• {\em Ab initio} Quantum Monte Carlo simulation of the warm dense electron gas in the thermodynamic limit
• Theoretical foundations of quantum hydrodynamics for plasmas
• Analytical expressions for the local-field factor G(q) and the exchange-correlation kernel K_{xc}(r) of the homogeneous electron gas
• Temperature-dependent quantum pair potentials and their application to dense partially ionized hydrogen plasmas
• Statically screened ion potential and Bohm potential in a quantum plasma
• Crystallization in two-component Coulomb systems
• Molecular Dynamics Simulations of Temperature Equilibration in Dense Hydrogen
• The influence of local field corrections on Thomson scattering in non-ideal two-component plasmas
• Coupling Strength in Coulomb and Yukawa One-Component Plasmas
• Uniform electron gas at finite temperatures
• Gradient corrections to the exchange-correlation free energy
• Configuration Path Integral Monte Carlo Approach to the Static Density Response of the Warm Dense Electron Gas
• Permutation Blocking Path Integral Monte Carlo approach to the Static Density Response of the Warm Dense Electron Gas
• Predicting the thermodynamics by using state-dependent interactions
• Low and intermediate energy stopping power of protons and antiprotons in canonical targets
• Optical conductivity of warm dense matter in wide frequency range within quantum statistical and kinetic approach
• Ion Potential in Non-ideal Dense Quantum Plasmas
• Evidence for out-of-equilibrium states in warm dense matter probed by X-ray Thomson scattering
• Improved Equation of State for Finite-Temperature Spin-Polarized Electron Liquids on the Basis of Singwi-Tosi-Land-Sjolander Approximation
• Pair Correlation Functions of Strongly Coupled Two-Temperature Plasma
• A critical assessment of models of pair-interactions and screening used in analyzing recent warm-dense matter (WDM) experiments
• Pair potentials for warm dense matter and their application to x-ray Thomson scattering in aluminum and beryllium
• Shielding of a moving test charge in a quantum plasma
• Theoretical description of spherically confined strongly correlated Yukawa plasmas

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• Ab initio simulation of warm dense matter
• The Static Local Field Correction of the Warm Dense Electron Gas: An ab Initio Path Integral Monte Carlo Study and Machine Learning Representation
• Effective Static Approximation: A Fast and Reliable Tool for Warm Dense Matter Theory
• Nonlinear Electronic Density Response in Warm Dense Matter
• Analytical representation of the Local Field Correction of the Uniform Electron Gas within the Effective Static Approximation
• Dynamic properties of the warm dense electron gas: an ab initio path integral Monte Carlo approach
• The Strongly Coupled Electron Liquid: ab initio Path Integral Monte Carlo Simulations and Dielectric Theories
• Density Response of the Warm Dense Electron Gas beyond Linear Response Theory: Excitation of Harmonics
• Finite-size effects in the reconstruction of dynamic properties from ab initio path integral Monte-Carlo simulations
• Dynamical structure factor of strongly coupled ions in a dense quantum plasma
• Restricted configuration path integral Monte Carlo
• The Relevance of Electronic Perturbations in the Warm Dense Electron Gas
• Energy loss and friction characteristics of electrons at warm dense matter and non-ideal dense plasma conditions
• The equation of state of partially ionized hydrogen and deuterium plasma revisited
• Screening of a test charge in a free-electron gas at warm dense matter and dense non-ideal plasma conditions
• Effective electronic forces and potentials from ab initio path integral Monte Carlo simulations
• Ab initio path integral Monte Carlo simulation of the Uniform Electron Gas in the High Energy Density Regime
• Linear-response time-dependent density functional theory approach to warm dense matter with adiabatic exchange--correlation kernels
• Shock Physics in Warm Dense Matter--a quantum hydrodynamics perspective
• Accelerating Equilibration in First-Principles Molecular Dynamics with Orbital-Free Density Functional Theory
• Assessing the accuracy of hybrid exchange-correlation functionals for the density response of warm dense electrons
• Nonlinear Density Response and Higher Order Correlation Functions in Warm Dense Matter
• The uniform electron gas at high temperatures: \emph{ab initio} path integral Monte Carlo simulations and analytical theory
• From Density Response to Energy Functionals and Back: An ab initio perspective on Matter Under Extreme Conditions
• Thermal Signals from Collective Electronic Excitations in Inhomogeneous Warm Dense Matter
• Averaging over atom snapshots in linear-response TDDFT of disordered systems: A case study of warm dense hydrogen
• Ionisation Calculations using Classical Molecular Dynamics
• Modelling of warm dense hydrogen via explicit real time electron dynamics: Dynamic structure factors
• Energy response and spatial alignment of the perturbed electron gas
• Ion core effect on transport characteristics in warm dense matter
• Nonlinear electronic density response of the warm dense electron gas: multiple perturbations and mode coupling
• Density-Functional-Theory Perspective on the Non-Linear Response of Correlated Electrons Across Temperature Regimes